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SEAN470
Samba Member
Joined: December 08, 2005
Posts: 7
Location: Antioch, CA
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 Posted: Wed Jan 25, 2006 3:32 pm Post subject: Leaded to Unleaded |
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| WHAT DO I NEED TO CHANGE LEADED TO UNLEADED ON MY 71 PORSCHE 914 1.7 |
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Miguel Arroyo
Samba Member
Joined: April 02, 2004
Posts: 3122
Location: Miami Beach, Florida
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| Posted: Wed Jan 25, 2006 4:44 pm Post subject: |
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| Since lead was used as a lubricant you will need to have the heads reworked, specifically the valve seats. |
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Nid
Samba Drama Queen
Joined: August 25, 2003
Posts: 1533
Location: Mount Shasta, CA
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| Posted: Sun Jan 29, 2006 2:12 am Post subject: |
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Wasn't lead phased out by '71? Shouldnt it have hardened seats already?
_________________
My, you've been naughty. How.....Delicious.
You're such an inspiration for the ways that I'll never ever choose to be
Oh so many ways for me to show you how your savior has abandoned you
Fuck your God, Your Lord and your Christ, he did this
Took all you had and left you this way
A Perfect Circle - Judith |
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Miguel Arroyo
Samba Member
Joined: April 02, 2004
Posts: 3122
Location: Miami Beach, Florida
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| Posted: Sun Jan 29, 2006 10:21 am Post subject: |
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| I was under the impression you could still purchase leaded fuel until at least the mid 70's |
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Griznant
Samba Member
Joined: February 03, 2005
Posts: 14
Location: SW Michigan
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| Posted: Mon Jan 30, 2006 5:20 am Post subject: |
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Type 4s have hardened valve seats so you don't need to mess with leaded fuel.
The "lubricate" theory only works on really early engines that didn't have hardened valve seats. By '71 most manufacturers had moved away from that.
Grant
_________________
'69 Porsche 912
'56 Oval Volksrod Project
'68 Squareback
'73 Standard
'72 Super w/Subaru EJ25 |
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Bruce
Samba Member
Joined: May 16, 2003
Posts: 17658
Location: Left coast, Canada
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| Posted: Tue Jan 31, 2006 2:20 am Post subject: |
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| Miguel Arroyo wrote: |
| Since lead was used as a lubricant you will need to have the heads reworked, specifically the valve seats. |
Miguel, you need to let the myth die.
Where I live, leaded fuel was banned in Dec 1990. I have not heard of one single car that suffered any of the "damage" the myth predicts. |
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randylok
Samba Member
Joined: November 23, 2005
Posts: 9
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| Posted: Tue Jan 31, 2006 3:38 pm Post subject: |
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Agreed. So the answer to the original question is simply,
fill it up with unleaded. |
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Miguel Arroyo
Samba Member
Joined: April 02, 2004
Posts: 3122
Location: Miami Beach, Florida
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SEAN470
Samba Member
Joined: December 08, 2005
Posts: 7
Location: Antioch, CA
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| Posted: Wed Feb 01, 2006 10:00 am Post subject: lead fuel |
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| how can you tell if the motor is a type 4 engine |
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Griznant
Samba Member
Joined: February 03, 2005
Posts: 14
Location: SW Michigan
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| Posted: Thu Feb 02, 2006 10:48 am Post subject: Re: lead fuel |
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| SEAN470 wrote: |
| how can you tell if the motor is a type 4 engine |
All 914 4-cylinder engines are Type 4s.
Grant
_________________
'69 Porsche 912
'56 Oval Volksrod Project
'68 Squareback
'73 Standard
'72 Super w/Subaru EJ25 |
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